Aircraft bolts are fabricated from cadmium or zinc plated corrosion resistant steel, unplated corrosion resistant steel, and anodized aluminum alloys. Most bolts used in aircraft structures are either general purpose. In certain cases, aircraft manufacturers make bolts of different dimensions or greater strength than the standard types. Such bolts are made for a particular application, and it is of extreme importance to use like bolts in replacement. Special bolts are usually identified by the letter "S" stamped on the head.

AN bolts come in three head styles - hex head, clevis, and NAS bolts are available in hex head, internal wrenching, and countersunk head styles.

The hex head aircraft bolt (AN-3 through AN-20) is an all purpose structural bolt used for general applications involving tension or shear loads where a light drive fit is permissible (0.006 inch clearance for a 5/8 inch hole, and other sizes in proportion).

Monroe Aerospace is a stocking distributor of Aerospace and Mil-Spec hardware. We have an extensive inventory of AN bolts. Every part that we sell is in Factory new (FN) condition and we provide our company’s certificate of conformance for all parts on every order. See below for our products.

various-an-bolt
Unit of Measure
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AN-BOLT-DRILLED-CAD AN6-32
Airframe Bolt; Drilled - AN6-32
AN-BOLT-DRILLED-CAD AN6-35
Airframe Bolt; Drilled - AN6-35
AN-CRES-BOLT-UNDRILLED AN6C11A
Airframe Bolt - AN6C11A
AN-CRES-BOLT-DRILLED-HEAD AN6CH6A
Airframe Bolt, Drilled Head - AN6CH6A
AN-BOLT-DRILLED-HEAD AN6H14A
Airframe Bolt; Drilled Head - AN6H14A
AN-BOLT-UNDRILLED AN8-47A
Airframe Bolt - AN8-47A
AN174-10A AN174-5A
Close Tolerance Bolt - AN174-5A
AN174-10 AN173-6
Close Tolerance Bolt - AN173-6
AN8 1/2-20 Thread Hexagon Head Airframe Bolts AN8-37A
3-31/32 Inch Length AN8 1/2-20 Thread Hexagon Head Airframe Bolt
AN174-10 AN177-37
Close Tolerance Bolt - AN177-37
AN23-15 AN23-40
Clevis Bolt - AN23-40
AN24-10 AN24-10
Clevis Bolt - AN24-10
AN24-10 AN24-28
Clevis Bolt - AN24-28
AN24-10 AN25-19
Clevis Bolt - AN25-19
AN-BOLT-DRILLED-CAD AN3-34
Airframe Bolt - AN3-34
AN-BOLT-UNDRILLED AN3-44A
Airframe Bolt - AN3-44A
AN-CRES-BOLT-DRILLED AN3C21
Airframe Bolt; Drilled - AN3C21
AN-CRES-BOLT-DRILLED-HEAD AN3CH5A
Airframe Bolt; Drilled Head - AN3CH5A
AN-BOLT-DRILLED-HEAD AN3H16
Bolt; Drilled Head - AN3H16
AN42B/AN43B Eye Bolts AN43B16A
Eye Bolt - AN43B16A
AN-BOLT-DRILLED-CAD AN4-43
Airframe Bolt; Drilled - AN4-43
AN-BOLT-DRILLED-CAD AN4-44
Airframe Bolt; Drilled - AN4-44
AN-BOLT-DRILLED-CAD AN4-50
Airframe Bolt, Drilled - AN4-50
AN-CRES-BOLT-DRILLED AN4C14
Airframe Bolt, Drilled - AN4C14
AN-CRES-BOLT-DRILLED AN4C15
Airframe Bolt; Drilled - AN4C15
AN-CRES-BOLT-UNDRILLED AN4C26A
Airframe Bolt - AN4C26A
AN-CRES-BOLT-DRILLED AN4C7
Airframe Bolt; Drilled - AN4C7
AN-BOLT-DRILLED-CAD AN5-36
Airframe Bolt; Drilled - AN5-36
AN-BOLT-UNDRILLED AN6-42A
Airframe Bolt - AN6-42A
AN-BOLT-DRILLED-HEAD AN6H17A
Airframe Bolt; Drilled Head - AN6H17A
AN-BOLT-DRILLED-HEAD AN6H21A
Airframe Bolt; Drilled Head - AN6H21A
AN-BOLT-DRILLED-HEAD AN6H30A
Airframe Bolt; Drilled Head - AN6H30A
AN-BOLT-DRILLED-HEAD AN6H37A
Airframe Bolt, Drilled Head - AN6H37A
AN-BOLT-DRILLED-CAD AN7-23
Airframe Bolt; Drilled - AN7-23
AN-BOLT-DRILLED-CAD AN8-20
Airframe Bolt - AN8-20
AN-BOLT-DRILLED-CAD AN8-23
Airframe Bolt - AN8-23
AN-BOLT-UNDRILLED AN8-22A
Airframe Bolt - AN8-22A
AN-BOLT-UNDRILLED AN8-40A
Airframe Bolt - AN8-40A
AN-BOLT-DRILLED-CAD AN8-45
Airframe Bolt - AN8-45
AN-BOLT-UNDRILLED AN8-45A
Airframe Bolt - AN8-45A
AN-BOLT-DRILLED-CAD AN6-36
Airframe Bolt; Drilled - AN6-36
AN174-10A AN173-3A
Close Tolerance Bolt - AN173-3A
AN174-10A AN174-12A
Close Tolerance Bolt - AN174-12A
AN174-10 AN174-21
Close Tolerance Bolt - AN174-21
various-an-bolt AN23-42A
AN Bolts - Part # AN23-42A
AN175 0.3125-24 Thread Hexagon Head Close Tolerance Bolts AN175-30A
3-3/32 Inch Length AN175 0.3125-24 Thread Hexagon Head Close Tolerance Bolt
AN174-10 AN174-31
Close Tolerance Bolt - AN174-31
AN174-10A AN175-13A
Close Tolerance Bolt - AN175-13A
Unit of Measure
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